Dyno Results
Westech Engine Dyno Superflow 901
Torque
RPM318360340SHT1 5⁄8tti1 3⁄4
2500391.3389.5392.0396.1392.9397.4392.3
3000389.0390.1394.3396.5398.4399.5395.8
3500403.0407.1408.3414.5420.5421.1418.3
3700400.2404.7409.1413.7423.9425.5420.7
4000392.7395.5401.2403.4411.9417.4409.9
4500362.6365.8367.1374.1372.7380.9374.3
5000318.4319.5323.7330.7328.1331.6326.3
5400273.2283.5281.4286.6273287.6281.3
Horsepower
RPM318360340SHT1 5⁄8tti1 3⁄4
2500186185187189187189187
3000223223225226228228226
3500269271272276280281279
4000299301306307314318312
4500311313315321319326321
4600211314315320317327319
5000303304308315312316311
5400281291289295282296289

Legend
318: Stock '69 A-Body exhaust manifolds with 24-inch extensions
360: Stock '77 360 iron log-style exhaust manifolds with 24-inch extensions
340: Stock '70 340hp exhaust manifolds with 24-inch extensions
SHT: Hedman 151/48-inch-tube shorty headers with 24-inch extensions 1 5⁄8: Hooker Competition 1 5⁄8-inch ceramic-coated header tti: Tube Technologies Inc. 1 5⁄8x1 3⁄4-inch chrome step header 1 3⁄4: Hooker Super Competition 1 3⁄4-inch header; bare, uncoated